import type { CommandResponse } from '../../client/client.type.js';
import { type TargetGroup } from './group.utils.js';
/** Current assignment for a consumer-group member. */
export type ConsumerGroupAssignment = {
    /** Monotonic group generation */
    generation: bigint;
    /** Partition IDs currently owned by this member */
    partitions: number[];
};
export declare const SYNC_GROUP: {
    code: number;
    serialize: ({ streamId, topicId, groupId }: TargetGroup) => Buffer<ArrayBuffer>;
    deserialize: (response: CommandResponse) => ConsumerGroupAssignment | null;
};
/** Fetches this connection's current consumer-group assignment. */
export declare const syncGroup: (getClient: import("../../client/client.type.js").ClientProvider) => (arg: TargetGroup) => Promise<ConsumerGroupAssignment | null>;
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